Y43H-25 type pilot piston steam valve: flange connection form, piston structure, the valve seat sealing surface material for Cr13 stainless steel, nominal pressure PN25, WCB body material for the steam valve. 

 Y43H-25 type pilot valve piston steam from the main valve and pilot valve composed of two parts. Mainly by the main valve seat, the main valve plate, piston, springs and other parts. Mainly by the pilot valve seat, disc, diaphragm, spring, adjusting SPRINGS. This product is based on the common valve made a great improvement, increased piston area, changing the form of cutting and sealing the structure, increasing the flow area, etc., resulting in increased sensitivity, flow, life and so much improved performance. Steam pipes are mainly used for large flow changes in traffic flow, inlet pressure variation in the steam line. 

 Product performance parameters 
 Y43H-25 type pilot valve piston main performance parameters of model steam inlet parameters outlet pressure PN / MPa outlet pressure / MPa for the media 
 Temperature / ℃ Pressure / MPa 
 Y43H-25 25 ≤ 200 2.5 0.05 ~ 1.6 ± 0.07 Steam 


 Materials, product components, 
 Y43H-25 steam valve piston type pilot model material components material 
 Valve, the valve cover, valve cover under the main and auxiliary valve, main valve seat, piston main and adjust the spring diaphragm piston spring 
 Y43H-25 WCB silico-manganese steel, stainless steel, chrome vanadium steel, cast iron stainless steel alloy 


 Product shape and structure size 
 Y43H-25 steam valve piston type pilot structure shape and size (mm) DN LD D1 D2 bz × ?d H1 H2 Weight / kg 
 25 180 115 85 65 16 4 × ?18 100 310 16 
 32 200 140 100 76 18 4 × ?18 108 320 17 
 40 220 150 110 84 18 4 × ?18 110 325 25 
 50 250 160 125 99 20 4 × ?18 116 330 30 
 65 280 180 145 118 22 8 × ?18 140 355 36 
 80 310 195 160 132 24 8 × ?18 155 375 51 
 100 350 230 190 156 24 8 × ?23 165 385 54 
 125 400 270 220 184 26 8 × ?26 190 430 94 
 150 450 300 250 211 28 8 × ?26 215 450 112 
 200 550 360 310 274 ??30 12 × ?26 250 520 170